Article(id=1200482405493633030, tenantId=1146029695717560320, journalId=1189987059142926344, issueId=1200482403828495344, articleNumber=null, orderNo=null, doi=10.19457/j.1001-2095.dqcd24478, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=research-article, receivedDate=1657468800000, receivedDateStr=2022-07-11, revisedDate=1662393600000, revisedDateStr=2022-09-06, acceptedDate=null, acceptedDateStr=null, onlineDate=1764146909353, onlineDateStr=2025-11-26, pubDate=1718812800000, pubDateStr=2024-06-20, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1764146909353, onlineIssueDateStr=2025-11-26, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1764146909353, creator=13701087609, updateTime=1764146909353, updator=13701087609, issue=Issue{id=1200482403828495344, tenantId=1146029695717560320, journalId=1189987059142926344, year='2024', volume='54', issue='6', pageStart='3', pageEnd='96', issueExtLink='null', onlineDate='null', pubDate='null', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=null, createTime=1764146908957, creator=13701087609, updateTime=1764224882080, updator=13701087609, preIssue=null, nextIssue=null, ext={EN=IssueExt(id=1200809446868898278, tenantId=1146029695717560320, journalId=1189987059142926344, issueId=1200482403828495344, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1200809446868898279, tenantId=1146029695717560320, journalId=1189987059142926344, issueId=1200482403828495344, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null}, startPage=76, endPage=82, ext={EN=ArticleExt(id=1200482405791428623, articleId=1200482405493633030, tenantId=1146029695717560320, journalId=1189987059142926344, language=EN, title=Composite Insulator Defect Identification Method Using Improved RCNN Convolution Kernel, columnId=null, journalTitle=Electric Drive, columnName=null, runingTitle=null, highlight=null, articleAbstract=
The detection of composite insulator defects in substations still relies on inspection by operators,which is a heavy workload and prone to leakage due to visual fatigue.To reduce the computational resource consumption and shorten the training time,the region convolutional neural networks(RCNN)was improved by reorganizing the convolution kernel,and a detection method was proposed for insulator crack shape features. The method can meet the premise of insufficient training sample data,but also can get better convolutional neural networks (CNN)training effect,and finally achieve accurate crack recognition. In the training phase,the RGB three-channel decomposition method was used to expand the training data set,the median filtering method was used to remove the noise,the improved convolutional kernel was used to train the CNN. In the test phase,the images were decomposed by RGB three-channel decomposition and input to CNN to get the exact crack center coordinates and length. The non-maximum suppression(NMS)algorithm was used to de-weight the images to get the final crack recognition results. The example analysis shows that the propose method can still achieve good recognition accuracy, and accurately identify the specific location of cracks under the premise of insufficient training samples.
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变电站复合绝缘子缺陷的检测仍然依赖于运行人员的巡检,巡检工作量大,易因视觉疲劳导致漏检。为减少计算资源消耗和缩短训练时间,通过重新组织卷积核改进了区域卷积神经网络(RCNN),提出了一种针对绝缘子裂纹形状特征的检测方法。该方法满足在训练样本数据不足的前提下,也能得到较好的卷积神经网络(CNN)训练效果,最终实现准确的裂纹识别。训练阶段采用RGB三通道分解方法,扩充训练数据集;利用中值滤波方法去除噪声;采用改进后的卷积核训练CNN。试验阶段将图片进行RGB三通道分解,并输入CNN得到确切的裂纹中心坐标、长度;采用非极大值抑制(NMS)算法去重,得到最终的裂纹识别结果。通过实例分析表明,在训练样本不足前提下,所提方法依然能达到较好的识别准确率,并能准确识别出裂纹的具体位置。
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李新海(1971—),男,本科,高级工程师,主要研究方向为新技术在电力系统中的应用、人工智能、变电设备运行、检修管理及研究,Email:zslixinhai@163.com
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李新海(1971—),男,本科,高级工程师,主要研究方向为新技术在电力系统中的应用、人工智能、变电设备运行、检修管理及研究,Email:zslixinhai@163.com
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Journal of Compu-ter Applications,
2019,
39(S1):210-214., articleTitle=Insulator defect detection and location in UAV grid inspection, refAbstract=null)], funds=[Fund(id=1200501573462905377, tenantId=1146029695717560320, journalId=1189987059142926344, articleId=1200482405493633030, awardId=GDKJXM20190154(032000KK52190001), language=CN, fundingSource=广东电网有限责任公司科技项目(GDKJXM20190154(032000KK52190001)), fundOrder=null, country=null)], companyList=[AuthorCompany(id=1200501567158866212, tenantId=1146029695717560320, journalId=1189987059142926344, articleId=1200482405493633030, xref=null, ext=[AuthorCompanyExt(id=1200501567167254821, tenantId=1146029695717560320, journalId=1189987059142926344, articleId=1200482405493633030, companyId=1200501567158866212, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=Zhongshan Power Supply Bureau of Guangdong Power Grid Co.,Ltd.,Zhongshan 528401,Guangdong,China), AuthorCompanyExt(id=1200501567175643431, tenantId=1146029695717560320, journalId=1189987059142926344, articleId=1200482405493633030, companyId=1200501567158866212, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=广东电网有限责任公司中山供电局,广东 中山 528401)])], figs=[ArticleFig(id=1200501570338148794, tenantId=1146029695717560320, journalId=1189987059142926344, articleId=1200482405493633030, language=EN, label=Fig.1, caption=
Relative position of cracks in composite insulators in substations, figureFileSmall=LGZWXQrkICytW5Dn3VLPtQ==, figureFileBig=v7TQESX/D/lN5skThDFMPA==, tableContent=null), ArticleFig(id=1200501570451395006, tenantId=1146029695717560320, journalId=1189987059142926344, articleId=1200482405493633030, language=CN, label=图1, caption=
变电站复合绝缘子裂纹的相对位置, figureFileSmall=LGZWXQrkICytW5Dn3VLPtQ==, figureFileBig=v7TQESX/D/lN5skThDFMPA==, tableContent=null), ArticleFig(id=1200501570635944387, tenantId=1146029695717560320, journalId=1189987059142926344, articleId=1200482405493633030, language=EN, label=Fig.2, caption=
RCNN model training and flow chart of insulator cracking image recognition, figureFileSmall=Zn5IRUZqtxALydRbpSc0wA==, figureFileBig=B6lrIpAhg9E5j4I4FdpBLw==, tableContent=null), ArticleFig(id=1200501570833076679, tenantId=1146029695717560320, journalId=1189987059142926344, articleId=1200482405493633030, language=CN, label=图2, caption=
RCNN模型训练以及绝缘子裂纹图像识别流程图, figureFileSmall=Zn5IRUZqtxALydRbpSc0wA==, figureFileBig=B6lrIpAhg9E5j4I4FdpBLw==, tableContent=null), ArticleFig(id=1200501570963100106, tenantId=1146029695717560320, journalId=1189987059142926344, articleId=1200482405493633030, language=EN, label=Fig.3, caption=
Convolution kernel design for insulator cracks, figureFileSmall=sawFAAMt2enTffwd/CilIg==, figureFileBig=sB++AfiI7uJG+J0HyzI3mQ==, tableContent=null), ArticleFig(id=1200501571126677968, tenantId=1146029695717560320, journalId=1189987059142926344, articleId=1200482405493633030, language=CN, label=图3, caption=
针对绝缘子裂纹的卷积核设计, figureFileSmall=sawFAAMt2enTffwd/CilIg==, figureFileBig=sB++AfiI7uJG+J0HyzI3mQ==, tableContent=null), ArticleFig(id=1200501571252507094, tenantId=1146029695717560320, journalId=1189987059142926344, articleId=1200482405493633030, language=EN, label=Fig.4, caption=
Flow chart of insulator image preprocessing, figureFileSmall=N4YdQu0Ee71aeRTXeYsmQQ==, figureFileBig=gp1NoJORRk1XYcwuqLj+Sw==, tableContent=null), ArticleFig(id=1200501571386724827, tenantId=1146029695717560320, journalId=1189987059142926344, articleId=1200482405493633030, language=CN, label=图4, caption=
绝缘子图像预处理流程图, figureFileSmall=N4YdQu0Ee71aeRTXeYsmQQ==, figureFileBig=gp1NoJORRk1XYcwuqLj+Sw==, tableContent=null), ArticleFig(id=1200501571495776734, tenantId=1146029695717560320, journalId=1189987059142926344, articleId=1200482405493633030, language=EN, label=Fig.5, caption=
Decomposed image of the R channel, figureFileSmall=ow4BW97bufEPxNsMRGLQZw==, figureFileBig=wDUwO5sJG4efwwV39zJsKQ==, tableContent=null), ArticleFig(id=1200501571609022946, tenantId=1146029695717560320, journalId=1189987059142926344, articleId=1200482405493633030, language=CN, label=图5, caption=
R通道分解图像, figureFileSmall=ow4BW97bufEPxNsMRGLQZw==, figureFileBig=wDUwO5sJG4efwwV39zJsKQ==, tableContent=null), ArticleFig(id=1200501571713880550, tenantId=1146029695717560320, journalId=1189987059142926344, articleId=1200482405493633030, language=EN, label=Fig.6, caption=
Partial insulator cracking image recognition raw data set, figureFileSmall=O8LouFGey5UiLeaMVcz7uQ==, figureFileBig=qane9I9H5opr82JdU+8Tvg==, tableContent=null), ArticleFig(id=1200501571810349546, tenantId=1146029695717560320, journalId=1189987059142926344, articleId=1200482405493633030, language=CN, label=图6, caption=
部分绝缘子开裂图像识别原始数据集, figureFileSmall=O8LouFGey5UiLeaMVcz7uQ==, figureFileBig=qane9I9H5opr82JdU+8Tvg==, tableContent=null), ArticleFig(id=1200501571915207152, tenantId=1146029695717560320, journalId=1189987059142926344, articleId=1200482405493633030, language=EN, label=Fig.7, caption=
Effect diagrams of actual crack identification, figureFileSmall=SSuxqB9HL41V8QPX9RpG5w==, figureFileBig=2bABLiSB0YfhQ81D5kinWg==, tableContent=null), ArticleFig(id=1200501572020064756, tenantId=1146029695717560320, journalId=1189987059142926344, articleId=1200482405493633030, language=CN, label=图7, caption=
网络检测输出结果图, figureFileSmall=SSuxqB9HL41V8QPX9RpG5w==, figureFileBig=2bABLiSB0YfhQ81D5kinWg==, tableContent=null), ArticleFig(id=1200501572087173623, tenantId=1146029695717560320, journalId=1189987059142926344, articleId=1200482405493633030, language=EN, label=Tab.1, caption=
RCNN structure and parameter design
, figureFileSmall=null, figureFileBig=null, tableContent=
| 输入 | 卷积层 | 内核大小 | 内核数量 | 滑动步长 | 填充像素 | 输出 | 参数量/K | 占内存大小/Kb |
| 512×512×3 | CONV1 | 7×17×3 | 24 | 3 | 0 | 169×166×24 | 8.37 | 768.00 |
| 169×166×24 | MAX POOL1 | 3×3 | | 2 | 0 | 84×83×24 | | 658.81 |
| 84×83×24 | NORM1 | | | | | | | 162.74 |
| 84×83×24 | CONV2 | 5×5×24 | 72 | 1 | 2 | 84×83×72 | 42.19 | 162.74 |
| 84×83×72 | MAX POOL2 | 3×3 | | 2 | 0 | 42×41×72 | | 488.23 |
| 42×41×72 | NORM1 | | | | | | | 119.15 |
| 42×41×72 | CONV3 | 3×3×72 | 96 | 1 | 1 | 42×41×96 | 60.75 | 119.15 |
| 42×41×96 | CONV4 | 3×3×96 | 96 | 1 | 1 | 42×41×96 | 81.00 | 158.86 |
| 42×41×96 | MAX POOL3 | 3×3 | | 2 | 0 | 20×20×96 | | 158.86 |
| 20×20×96 | FC1 | | | | | 1 024 | 38 717 | 37.81 |
| 1 024 | FC2 | | | | | 1 024 | 1 024 | 1 024.00 |
| 1 024 | FC3-Classifier | | | | | 1 | 1 | 1.00 |
| 1 024 | FC3-Regressor | | | | | 512×512×1 | 262.14 | 512.00 |
), ArticleFig(id=1200501572204614141, tenantId=1146029695717560320, journalId=1189987059142926344, articleId=1200482405493633030, language=CN, label=表1, caption=
RCNN结构与参数设计
, figureFileSmall=null, figureFileBig=null, tableContent=
| 输入 | 卷积层 | 内核大小 | 内核数量 | 滑动步长 | 填充像素 | 输出 | 参数量/K | 占内存大小/Kb |
| 512×512×3 | CONV1 | 7×17×3 | 24 | 3 | 0 | 169×166×24 | 8.37 | 768.00 |
| 169×166×24 | MAX POOL1 | 3×3 | | 2 | 0 | 84×83×24 | | 658.81 |
| 84×83×24 | NORM1 | | | | | | | 162.74 |
| 84×83×24 | CONV2 | 5×5×24 | 72 | 1 | 2 | 84×83×72 | 42.19 | 162.74 |
| 84×83×72 | MAX POOL2 | 3×3 | | 2 | 0 | 42×41×72 | | 488.23 |
| 42×41×72 | NORM1 | | | | | | | 119.15 |
| 42×41×72 | CONV3 | 3×3×72 | 96 | 1 | 1 | 42×41×96 | 60.75 | 119.15 |
| 42×41×96 | CONV4 | 3×3×96 | 96 | 1 | 1 | 42×41×96 | 81.00 | 158.86 |
| 42×41×96 | MAX POOL3 | 3×3 | | 2 | 0 | 20×20×96 | | 158.86 |
| 20×20×96 | FC1 | | | | | 1 024 | 38 717 | 37.81 |
| 1 024 | FC2 | | | | | 1 024 | 1 024 | 1 024.00 |
| 1 024 | FC3-Classifier | | | | | 1 | 1 | 1.00 |
| 1 024 | FC3-Regressor | | | | | 512×512×1 | 262.14 | 512.00 |
), ArticleFig(id=1200501572426912257, tenantId=1146029695717560320, journalId=1189987059142926344, articleId=1200482405493633030, language=EN, label=Tab.2, caption=
Network detection output after deduplication
, figureFileSmall=null, figureFileBig=null, tableContent=
| 输出列表 | 坐标中心 (x,y) | 检测框长宽 (w,h) | 输出置信度 (≥50.00%)/% | 输出 来源 |
| i.crack | (1 703,901) | (759,107) | 67.99 | G通道 |
| ii.crack | (1 822,615) | (645,93) | 66.43 | R通道 |
| iii.crack | (1 571,1 206) | (854,118) | 64.78 | B通道 |
| iv.crack | (1 744,1 535) | (650,77) | 57.65 | G通道 |
), ArticleFig(id=1200501572632433159, tenantId=1146029695717560320, journalId=1189987059142926344, articleId=1200482405493633030, language=CN, label=表2, caption=
经过去重后的网络检测输出结果
, figureFileSmall=null, figureFileBig=null, tableContent=
| 输出列表 | 坐标中心 (x,y) | 检测框长宽 (w,h) | 输出置信度 (≥50.00%)/% | 输出 来源 |
| i.crack | (1 703,901) | (759,107) | 67.99 | G通道 |
| ii.crack | (1 822,615) | (645,93) | 66.43 | R通道 |
| iii.crack | (1 571,1 206) | (854,118) | 64.78 | B通道 |
| iv.crack | (1 744,1 535) | (650,77) | 57.65 | G通道 |
), ArticleFig(id=1200501572770845195, tenantId=1146029695717560320, journalId=1189987059142926344, articleId=1200482405493633030, language=EN, label=Tab.3, caption=
Original RCNN test results
, figureFileSmall=null, figureFileBig=null, tableContent=
| 图片集 | 图片 总数 | 实际裂纹数量 | RCNN 输出 | 裂纹识别准确率/% | 误判 裂纹数 |
| 全集 | 100 | 242 | 227 | 93.80 | -17 |
| 带裂纹集 | 95 | 242 | 226 | 93.39 | -16 |
| 无裂纹集 | 5 | 0 | 1 | — | +1 |
), ArticleFig(id=1200501572947005967, tenantId=1146029695717560320, journalId=1189987059142926344, articleId=1200482405493633030, language=CN, label=表3, caption=
原RCNN测试结果
, figureFileSmall=null, figureFileBig=null, tableContent=
| 图片集 | 图片 总数 | 实际裂纹数量 | RCNN 输出 | 裂纹识别准确率/% | 误判 裂纹数 |
| 全集 | 100 | 242 | 227 | 93.80 | -17 |
| 带裂纹集 | 95 | 242 | 226 | 93.39 | -16 |
| 无裂纹集 | 5 | 0 | 1 | — | +1 |
), ArticleFig(id=1200501573093806611, tenantId=1146029695717560320, journalId=1189987059142926344, articleId=1200482405493633030, language=EN, label=Tab.4, caption=
Improved convolutional kernel RCNN test results
, figureFileSmall=null, figureFileBig=null, tableContent=
| 图片集 | 图片总数 | 实际裂纹数量 | RCNN输出 | 裂纹识别准确率/% | 误判 裂纹数 |
| 全集 | 100 | 242 | 241 | 99.59 | -1 |
| 带裂纹集 | 95 | 242 | 240 | 99.17 | -2 |
| 无裂纹集 | 5 | 0 | 0 | — | 0 |
), ArticleFig(id=1200501573211247130, tenantId=1146029695717560320, journalId=1189987059142926344, articleId=1200482405493633030, language=CN, label=表4, caption=
改进卷积核RCNN测试结果
, figureFileSmall=null, figureFileBig=null, tableContent=
| 图片集 | 图片总数 | 实际裂纹数量 | RCNN输出 | 裂纹识别准确率/% | 误判 裂纹数 |
| 全集 | 100 | 242 | 241 | 99.59 | -1 |
| 带裂纹集 | 95 | 242 | 240 | 99.17 | -2 |
| 无裂纹集 | 5 | 0 | 0 | — | 0 |
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